38083 Rhadamanthus

38083 Rhadamanthus
Discovery
Discovered by	Deep Ecliptic Survey
Discovery date	17 April 1999
Designations
MPC designation	38083 Rhadamanthus
Pronunciation	/ˌrædəˈmænθəs/ RAD-ə-MAN-thəs
Named after	Rhadamanthus
Alternative names	1999 HX₁₁
Minor planet category	TNO^[1]^[2]
Adjectives	Rhadamanth(e/i)an, Rhadamanthine
Orbital characteristics ^[1]^[3]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc	3367 days (9.22 yr)
Aphelion	45.204 AU (6.7624 Tm)
Perihelion	33.185 AU (4.9644 Tm)
Semi-major axis	39.194 AU (5.8633 Tm)
Eccentricity	0.15333
Orbital period	245.38 yr (89625.5 d)
Average orbital speed	4.73 km/s
Mean anomaly	97.148°
Mean motion	0° 0^m 14.46^s / day
Inclination	12.720°
Longitude of ascending node	9.9615°
Argument of perihelion	82.178°
Earth MOID	32.2253 AU (4.82084 Tm)
Jupiter MOID	28.1835 AU (4.21619 Tm)
Jupiter Tisserand parameter	5.424
Physical characteristics
Dimensions	87–276 km^[4]^[5]
Temperature	~ 44 K
Absolute magnitude (H)	7.1^[3]

38083 Rhadamanthus is a trans-Neptunian object (TNO). It was discovered in 1999 by the Deep Ecliptic Survey. It was originally thought to be a plutino but no longer is.^[1]^[2]

Discovery and naming

Rhadamanthus was discovered on 17 April 1999 by the Deep Ecliptic Survey.

Rhadamanthus is named after the Greek mythological figure. The name was announced in the circular of the Minor Planet Center of 24 July 2002, which stated "Rhadamanthus was a son of Zeus and Europa. Because of his just and upright life, after death he was appointed a judge of the dead and the ruler of Elysium, a blissfully beautiful area of the Underworld where those favored by the gods spent their life after death. The name was suggested by E. K. Elliot."^[6]

References

1 2 3 Marc W. Buie (7 June 2008). "Orbit Fit and Astrometric record for 38083". SwRI (Space Science Department). Retrieved 2015-10-04.
1 2 "MPEC 2006-X45 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 21 December 2006. Archived from the original on 28 August 2008. Retrieved 2008-07-18. (older provisional Plutino listing)
1 2 "JPL Small-Body Database Browser: 38083 Rhadamanthus (1999 HX11)" (2008-06-07 last obs). Retrieved 12 April 2016.
↑ Rhadamanthus
↑ "ABSOLUTE MAGNITUDE (H)". NASA/JPL. Retrieved 2015-09-23.
↑ "Minor Planet Circulars/Minor Planets and Comets, MPC-46112" (PDF). Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. Retrieved 2015-04-19.

External links

Orbital simulation from JPL (Java)
Ephemeris
38083 Rhadamanthus at the JPL Small-Body Database
- Discovery · Orbit diagram · Orbital elements · Physical parameters

Minor planets navigator

(38082) 1999 HO11 38083 Rhadamanthus (38084) 1999 HB12

Trans-Neptunian objects

TNO classes	Cubewanos Scattered-disc objects Detached objects Resonant objects (Neptune trojans Plutinos Twotinos) Natural satellites Double objects

Dwarf Planets (moons)	Pluto Charon Styx Nix Kerberos Hydra Haumea Namaka Hi'iaka Makemake S/2015 (136472) 1 Eris Dysnomia

Sednoids	90377 Sedna 2012 VP113

Small Solar System bodies

Minor planets

Designation Groups Moons Meanings of names Pronunciation of names

Asteroids	Aten asteroid Asteroid belt Families Jupiter Trojans Near-Earth Spectral types

Distant minor planets	Centaurs Damocloids Neptune trojans Trans-Neptunian objects Detached Kuiper belt Oort cloud Scattered disc

Comets

Meteoroids

Lists / categories

Asteroid groups and families
Asteroid moons
Binary asteroids
Minor planets

Dwarf planets

Asteroid belt	IAU: Ceres No longer rounded and therefore not dwarf planets: Vesta (disrupted out of equilibrium)

Centaurs	Possibly: Chariklo Chiron

Centaurs (extended)	Possibly: 1995 SN55 Ceto 2010 TY53

Plutinos	IAU: Pluto Additional objects proposed by Brown and Tancredi: Orcus Ixion 2003 AZ₈₄ 2004 UX₁₀ Huya Possibly: 2003 UZ₄₁₃ 2003 VS₂ 2002 VR₁₂₈ 2004 PF₁₁₅ 2002 XV93 2007 JH43 2001 QF298

Twotinos	Possibly: 2002 WC₁₉

Other resonances/ unknown resonances:	IAU: Haumea Possibly: 2002 XW₉₃ 1999 DE₉ 1999 KR₁₆ 2001 YH₁₄₀ 2011 GM27 2010 VK201 2013 FZ27 2014 UM33 1999 CD158

Cubewanos:	IAU: Makemake Additional objects proposed by Brown and Tancredi: 2002 MS₄ Salacia Quaoar Varuna Varda 2004 GV₉ 2002 AW₁₉₇ 2002 TX₃₀₀ 2005 RR₄₃ 2003 OP₃₂ 2005 RN₄₃ Possibly: Chaos Altjira Sila-Nunam 2002 UX₂₅ 2007 JJ₄₃ 2005 UQ₅₁₃ 2004 TY₃₆₄ 2003 QW₉₀ 1998 SN₁₆₅ 2002 KX₁₄ Praamzius 2004 NT₃₃ 2010 FX86 2002 CY248 2010 VR11 Rhadamanthus

Scattered disc	IAU: Eris Additional objects proposed by Brown and Tancredi: 2007 OR₁₀ 1996 TL₆₆ 2001 UR₁₆₃ 2005 RM₄₃ Possibly: 2002 TC₃₀₂ 2004 XA₁₉₂ 2005 QU₁₈₂ 2006 QH181 2007 UK₁₂₆ 2010 EK139 2010 KZ39 2010 RE64 2010 RF43 2010 TJ 2013 FY27 2008 OG19 1996 GQ₂₁ 2012 HH₂ 1999 CC₁₅₈ 2006 HH123 2010 VZ98

Area uncertain	Captured satellites that were once dwarf planets: Triton (captured by Neptune) Phoebe (captured by Saturn, and was then disrupted out of equilibrium) Possibly: 2011 FW62 (lost) 2000 YW₁₃₄ V774104

Detached objects	Possibly: 2004 XR190 2010 GB174 2008 ST291 1995 TL₈ 2005 TB₁₉₀ 2003 QX113 2003 FY₁₂₈ 2004 VN112 2000 CR₁₀₅

Sednoids	Objects proposed by Brown and Tancredi: Sedna Possibly: 2012 VP113

Former candidates	Pallas Vesta Hygiea Cybele

See also: Charon Vanth Dysnomia Hiʻiaka Mesoplanet Planemo List of trans-Neptunian objects List of possible dwarf planets List of Solar System objects List of Solar System objects by size

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